package com.mao.config;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);

        //添加shiro的过滤器
        /**
         * anon:无需认证就可以访问
         * authc:必须认证才能访问
         * user:必须拥有 记住我 功能才能访问
         * perms:拥有对某个资源的权限才能访问
         * role:拥有某个角色权限才能访问
         */

        Map<String,String> filterMap = new LinkedHashMap<>();

        //授权,必须写在拦截之前，否则授权失败
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");

        //拦截
        //filterMap.put("/user/add","authc");
        //filterMap.put("/user/update","authc");
        filterMap.put("/user/*","authc");

        bean.setFilterChainDefinitionMap(filterMap);

        //设置登录请求
        bean.setLoginUrl("/toLogin");

        //设置未授权的请求
        bean.setUnauthorizedUrl("/noauth");

        return bean;
    }

    //第二步：DefaultWebSecurityManager
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联UserRealm
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    //第一步：创建 realm 对象,需要自定义类
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }

    //整合ShiroDialect：用来整合shiro thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }

}
